The best affiliate programs like PDF-API.io in 2025

InvoicingAPI is a versatile and developer-friendly invoicing platform designed to make creating, customizing, and managing invoices seamless for businesses of all sizes. With support for global tax regulations, a robust library of customizable templates, and the ability to generate beautifully formatted PDF invoices via a simple API call, InvoicingAPI streamlines the entire invoicing process. Users can invoice clients in any currency, integrate payment links for faster transactions, and manage payments, refunds, and payouts from an intuitive dashboard—all while enjoying a generous free tier and no fees on payments. The platform is platform-independent, supports unlimited app integrations with a single API key, and offers built-in safeguards to prevent accidental request overloads.

InvoicingAPI is a perfect solution for SaaS providers, e-commerce businesses, marketplaces, consultants, POS systems, and CRM developers looking to add dynamic, tax-compliant invoicing without heavy development overhead. Its ease of integration, high degree of customization, and focus on security and scalability make it an excellent choice for affiliates to promote, appealing to a broad audience of businesses seeking efficient and reliable invoicing solutions.

fwdAP is an intelligent accounts payable (AP) automation solution designed specifically for QuickBooks Online users. It streamlines the process of entering bills and credit card receipts by allowing users to simply forward invoices or receipts to a dedicated inbox, where fwdAP automatically processes and posts them directly into QuickBooks Online. With its plug-and-play setup, there’s no need for complicated mapping, syncing, or learning new software—businesses can get started quickly and see immediate workflow improvements. The platform also offers flexible rule-setting using conversational language, letting users customize how invoices and receipts are handled based on their unique bookkeeping requirements.

fwdAP is ideal for small business owners, bookkeepers, and accountants looking to save time, reduce manual data entry errors, and keep financial records accurate and up to date. Its ease of use, mobile accessibility, and focus on automation make it a valuable tool for anyone wanting to focus more on growing their business and less on paperwork. Affiliates will find fwdAP an attractive offer for clients who value efficiency, accuracy, and simplicity in their accounting processes.

TokenSpy is a specialized tool designed to help users identify scam tokens, rug pulls, and honeypots within the Solana ecosystem. By analyzing critical token data—such as minting permissions, buy/sell tax changes, liquidity status, and token holder distribution—TokenSpy provides instant alerts on the likelihood of a token being a scam. The platform is easy to use, integrating directly into popular crypto tools and websites through a convenient Chrome extension, allowing users to make informed decisions without disrupting their workflow.

TokenSpy is ideal for crypto traders, investors, and enthusiasts who want to minimize risk and avoid falling victim to fraudulent projects on Solana. Affiliates will find this product attractive to promote as it addresses a significant pain point in the fast-moving crypto market, offering genuine value by enhancing safety and trust for both novice and experienced traders.

Monday.com is a highly versatile work operating system designed to streamline workflows and enhance team collaboration across various industries. Its intuitive interface allows users to easily plan, track, and manage tasks and projects in one centralized location. With customizable templates, automation features, and powerful integrations with popular tools like Slack, Microsoft Teams, and Google Drive, Monday.com helps teams stay aligned and productive. From small startups to large enterprises, it's suitable for diverse environments including marketing, software development, sales, HR, and more.

This platform is particularly beneficial for publishers as it provides real-time data insights and detailed analytics, allowing for efficient content scheduling and performance tracking. Whether you're managing content calendars, coordinating with remote teams, or overseeing an entire project lifecycle, Monday.com offers robust solutions to keep you on top of your game. By promoting Monday.com, publishers can endorse a tool that significantly enhances productivity and organization for businesses of all sizes.

Double Zero is an open-source email infrastructure platform that empowers users to fully own and control their email sending capabilities. Designed to simplify the deployment and management of email services, Double Zero provides an easy-to-use email API for sending transactional emails and supports advanced features like broadcasts and automations through its Pro version. With single-command deployment using SST, seamless setup of AWS services (SES, SNS, SQS, EC2, S3, Route 53), and a straightforward REST or JS API, users can quickly establish robust, scalable email infrastructure without relying on traditional third-party providers. The platform also offers features such as multi-recipient tracking, a WYSIWYG editor, SMTP endpoints, contact and list management, and team collaboration tools.

Double Zero is ideal for developers, SaaS businesses, and organizations seeking greater control, transparency, and cost-efficiency in their email operations. It stands out for its open and modifiable codebase, affordable pricing, and the ability to deploy within your own cloud environment, making it a compelling choice for privacy-conscious users and those looking to avoid vendor lock-in. Affiliates will find Double Zero attractive to promote, as it addresses a growing demand for customizable, developer-friendly email solutions that balance ease of use with full ownership and transparency.

TaxVerge is an all-in-one financial management platform designed to simplify and automate key business processes such as invoicing, tax preparation, customer and product management, and financial reporting. With features like easy invoice creation, real-time analytics, secure customer data storage, and robust product and inventory tracking, TaxVerge streamlines financial workflows for businesses of all sizes. Its intuitive interface enables users to manage customers and products efficiently, generate detailed reports, monitor payment statuses, and apply discounts or taxes with just a few clicks. The platform boasts a 40% faster tax preparation process and 99.9% uptime reliability, ensuring dependable access to essential financial tools.

TaxVerge is ideal for small businesses, financial consultants, accountants, and anyone looking to reduce manual errors and save time on routine financial tasks. Affiliates will find TaxVerge appealing to promote thanks to its free entry-level plan, simple and transparent pricing, and comprehensive feature set that addresses common pain points in business finance management. Its wide device compatibility and strong customer testimonials further make it a compelling choice for organizations seeking efficiency, accuracy, and growth in their financial operations.

TeachersAid.io is an innovative online platform designed to streamline lesson planning, grading, and classroom management for educators. Utilizing advanced AI technology, TeachersAid.io helps teachers quickly generate lesson plans, worksheets, and assessments tailored to various grade levels and subjects. The platform also offers automated grading, insightful analytics on student progress, and a suite of organizational tools to reduce administrative workload and help teachers focus more on teaching.

TeachersAid.io is ideal for K-12 educators, tutors, and school administrators who want to save time and enhance productivity in their daily tasks. Affiliates will find this product especially appealing to promote due to its time-saving features, ease of use, and direct impact on improving teaching effectiveness, making it a valuable resource for educators seeking practical solutions to everyday classroom challenges.

IconKit is an AI-powered icon generator designed to help users create high-quality, customizable icons quickly and affordably. By leveraging advanced AI technology, IconKit enables anyone—from designers and developers to business owners and hobbyists—to generate unique icons in a wide variety of styles, such as metallic, isometric, doodle, cartoon, minimal, and more. The platform features an intuitive interface, allowing users to simply describe the icon they need, choose their preferred colors and styles, and receive professionally rendered icons in less than a minute. IconKit operates on a credit system with no recurring fees, lifetime validity for credits, and a satisfaction guarantee that allows users to request more icons or refunds if they're not happy with the results.

This service is ideal for startups, agencies, content creators, and anyone seeking to enhance their visual branding without the time, expense, or limitations of hiring a professional designer. Affiliates will find IconKit appealing to promote because it solves a universal design challenge with automation, flexibility, and cost-effectiveness, making it a valuable resource for a broad audience looking to streamline their workflow and elevate their projects with premium, commercially usable icons.

Chatwith is a versatile platform that empowers businesses and individuals to create custom AI chatbots trained on their own data, such as website content, knowledge bases, and uploaded files. With no coding required, users can deploy intelligent chat agents capable of answering customer questions, automating tasks, and integrating with over 5000 apps or APIs. The platform offers deep customization, allowing users to match the chatbot’s appearance and tone to their brand, and supports more than 95 languages, ensuring effective communication with customers worldwide. Powerful analytics, conversation logs, and team management features provide valuable insights and operational control, while seamless integration options make it easy to add the chatbot to any website or messaging platform.

Chatwith is ideal for businesses seeking to automate customer support, generate leads, or provide multilingual assistance on their websites and digital channels. Affiliates will find this program attractive to promote because it addresses a wide range of use cases across industries, offers a scalable and usage-based pricing model, and delivers tangible benefits in efficiency and customer satisfaction—making it a compelling solution for organizations aiming to enhance engagement and streamline operations.

Supaboost is an AI-powered tool designed to help developers write better SQL queries, debug faster, and ship high-quality code more efficiently. By integrating seamlessly with modern code editors and databases, Supaboost offers features like intelligent SQL suggestions, automated query optimization, instant error detection, and detailed explanations for complex queries. The platform aims to streamline the database development process, reduce manual trial and error, and empower users to work with SQL more confidently regardless of their skill level.

Supaboost is a valuable solution for software developers, data analysts, and engineering teams who frequently work with SQL and want to enhance their productivity and code quality. Affiliates will find Supaboost an attractive product to promote due to its wide applicability across industries, its ability to solve common pain points in database development, and its appeal to both beginners and seasoned professionals seeking to save time and avoid costly mistakes in their workflow.